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bug#22164: 25.0.50; Turning off blinking cursor mode makes menu tooltips
From: |
Eli Zaretskii |
Subject: |
bug#22164: 25.0.50; Turning off blinking cursor mode makes menu tooltips behave erratically |
Date: |
Sun, 13 Dec 2015 20:10:58 +0200 |
> Date: Sun, 13 Dec 2015 18:56:27 +0100
> From: martin rudalics <rudalics@gmx.at>
>
> With emacs -Q evaluate (blink-cursor-mode -1). Click the "File" entry
> on the menu bar. When I now move the mouse from one menu entry to
> another it takes approximately 8 seconds until the tooltip is removed
> from the previous entry and shown at the current one.
>
> Reproducible at least since Emacs 24.2 and likely a Windows-only bug.
> It might be related to this part of ‘blink-cursor-timer-function’
>
> ;; Suspend counting blinks when the w32 menu-bar menu is displayed,
> ;; since otherwise menu tooltips will behave erratically.
> (or (and (fboundp 'w32--menu-bar-in-use)
> (w32--menu-bar-in-use))
> (setq blink-cursor-blinks-done (1+ blink-cursor-blinks-done)))
>
> but I cannot imagine how that can have any effect when cursor blinking
> is turned off.
It's a known problem, and I don't know how to fix it (if a fix exists
at all). We need redisplay to update the menu tooltips on Windows,
and without the blinking cursor there's no redisplay.